An aircraft with the mass of 3kg is flying at an altitude of 2000m with a speed of 100m/s
what is the kinetic energy of the aircraft

Explanation:

K.E is 1/2 mv^2

Therefore KE is 300000×10000×1/2

=1500000000J

= 1500000KJ

Potential energy is mgh

Therefore PE is 300000×9.8×2000

=5,880,000,000J

=5880000KJ

1.5*10^9 joules.

Explanation:

Kinetic energy = ½ mv².

K.E= ½ *300000*(100)².

K.E= 150000 * 10000.

K.E= 1500000000 joules.

15.3 cos 65 degrees trig

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.